* [PATCH] Net/Usb:Fix realtek wireless NIC non-canonical address access issues
@ 2020-10-20 11:38 WeitaoWangoc
2020-10-27 1:48 ` Pkshih
0 siblings, 1 reply; 3+ messages in thread
From: WeitaoWangoc @ 2020-10-20 11:38 UTC (permalink / raw)
To: pkshih, kvalo, davem, kuba, linux-wireless, netdev, linux-kernel
Cc: tonywwang, weitaowang, CobeChen, TimGuo, wwt8723
During realtek USB wireless NIC initialization, it's unexpected
disconnection will cause urb sumbmit fail.On the one hand,
_rtl_usb_cleanup_rx will be called to clean up rx stuff, especially
for rtl_wq. On the other hand, disconnection will cause rtl_usb_disconnect
and _rtl_usb_cleanup_rx to be called.Finnally,rtl_wq will be flush/destroy
twice,which will cause non-canonical address 0xdead000000000122 access and
general protection fault.
Fixed this issue by remove _rtl_usb_cleanup_rx when urb sumbmit fail.
Signed-off-by: WeitaoWangoc <WeitaoWang-oc@zhaoxin.com>
---
drivers/net/wireless/realtek/rtlwifi/usb.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/net/wireless/realtek/rtlwifi/usb.c b/drivers/net/wireless/realtek/rtlwifi/usb.c
index 06e073d..d62b87f 100644
--- a/drivers/net/wireless/realtek/rtlwifi/usb.c
+++ b/drivers/net/wireless/realtek/rtlwifi/usb.c
@@ -731,7 +731,6 @@ static int _rtl_usb_receive(struct ieee80211_hw *hw)
err_out:
usb_kill_anchored_urbs(&rtlusb->rx_submitted);
- _rtl_usb_cleanup_rx(hw);
return err;
}
--
2.7.4
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] Net/Usb:Fix realtek wireless NIC non-canonical address access issues
2020-10-20 11:38 [PATCH] Net/Usb:Fix realtek wireless NIC non-canonical address access issues WeitaoWangoc
@ 2020-10-27 1:48 ` Pkshih
2020-10-27 2:23 ` 答复: " WeitaoWang-oc
0 siblings, 1 reply; 3+ messages in thread
From: Pkshih @ 2020-10-27 1:48 UTC (permalink / raw)
To: linux-wireless, kvalo, davem, netdev, WeitaoWang-oc, linux-kernel, kuba
Cc: CobeChen, tonywwang, weitaowang, TimGuo, wwt8723
On Tue, 2020-10-20 at 19:38 +0800, WeitaoWangoc wrote:
For rtlwifi driver, please use 'rtlwifi: ' as prefix of mail subject, like
"rtlwifi: Fix non-canonical address access issues"
> During realtek USB wireless NIC initialization, it's unexpected
> disconnection will cause urb sumbmit fail.On the one hand,
nit: add space right after period, like "... fail. On the one hand ..."
> _rtl_usb_cleanup_rx will be called to clean up rx stuff, especially
> for rtl_wq. On the other hand, disconnection will cause rtl_usb_disconnect
> and _rtl_usb_cleanup_rx to be called.Finnally,rtl_wq will be flush/destroy
> twice,which will cause non-canonical address 0xdead000000000122 access and
> general protection fault.
>
> Fixed this issue by remove _rtl_usb_cleanup_rx when urb sumbmit fail.
>
> Signed-off-by: WeitaoWangoc <WeitaoWang-oc@zhaoxin.com>
> ---
> drivers/net/wireless/realtek/rtlwifi/usb.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/drivers/net/wireless/realtek/rtlwifi/usb.c
> b/drivers/net/wireless/realtek/rtlwifi/usb.c
> index 06e073d..d62b87f 100644
> --- a/drivers/net/wireless/realtek/rtlwifi/usb.c
> +++ b/drivers/net/wireless/realtek/rtlwifi/usb.c
> @@ -731,7 +731,6 @@ static int _rtl_usb_receive(struct ieee80211_hw *hw)
>
> err_out:
> usb_kill_anchored_urbs(&rtlusb->rx_submitted);
> - _rtl_usb_cleanup_rx(hw);
> return err;
> }
>
^ permalink raw reply [flat|nested] 3+ messages in thread
* 答复: [PATCH] Net/Usb:Fix realtek wireless NIC non-canonical address access issues
2020-10-27 1:48 ` Pkshih
@ 2020-10-27 2:23 ` WeitaoWang-oc
0 siblings, 0 replies; 3+ messages in thread
From: WeitaoWang-oc @ 2020-10-27 2:23 UTC (permalink / raw)
To: Pkshih, linux-wireless, kvalo, davem, netdev, linux-kernel, kuba
Cc: Cobe Chen(BJ-RD), Tony W. Wang(XA-RD), Weitao Wang(BJ-RD),
Tim Guo(BJ-RD),
wwt8723
On Tue, 2020-10-27 at 09:39 +0800, Pkshih Wrote:
>On Tue, 2020-10-20 at 19:38 +0800, WeitaoWangoc wrote:
>For rtlwifi driver, please use 'rtlwifi: ' as prefix of mail subject, like
>"rtlwifi: Fix non-canonical address access issues"
>> During realtek USB wireless NIC initialization, it's unexpected
>> disconnection will cause urb sumbmit fail.On the one hand,
>nit: add space right after period, like "... fail. On the one hand ..."
Thanks for Your suggestion, I will resend this mail.
Weitaowang
Thanks
^ permalink raw reply [flat|nested] 3+ messages in thread
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2020-10-20 11:38 [PATCH] Net/Usb:Fix realtek wireless NIC non-canonical address access issues WeitaoWangoc
2020-10-27 1:48 ` Pkshih
2020-10-27 2:23 ` 答复: " WeitaoWang-oc
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